what is Helogense????????
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halogens are a group in the periodic table which have the group number 17 and have a valency 1 basically this consists of elements like chlorine fluorine bromine, iodine etc
sonam2138:
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fluorine, chlorine, bromine, iodine, and astatine, occupying group VIIA (17) of the periodic table....r known as halogense
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